Improvement in vibrating propellers



Vibrating Prpellers.

Patented Feb, 18,1873.

AM. PHoro-L/THnGRAPHIv ca My (oseamve mock-ss.)

'UNITED4 STATEs PATENT OFFICE. N

oHAnLE's r. MAoo'wrTzKY, or courus oHEIsTI, TEXAS.

,-IMPROVEMENT IN VIBRATING PROPELLERS.

Specification forming part of Letters Patent No. 135,994, dated February18, 1873.

To all 'whom 'it may concern.:

Be it known that I, CHARLES P. Mncow- ITZKY, of Corpus Christi, in thecounty of Nueces and vState of Texas,.have invented a new and usefulImprovement in Propellers, of which the following is a specification:

Figure 1 is a detail longitudinal section of my improved device. Fig. l2is a detail crosssection of the same.

Similar letters of reference indicate corresponding parts.

My invention has for its object lto furnish an improved device forpropelling steamers which shall be simple in construction and effectivein operation, enabling the movements of the vessel to be controlledreadily and so efiectually that she may be turned almost upon her axis.The invention consists in the combination of an arm, sliding block orplate, sliding plate or frame, rack-bar, pinion-wheels,

Vpivoted paddles, stops, and swiveled screw with each other and with thescrew piston-rod of a steamcylinder, as hereinafter more fullydescribed.

The device is designed to be placed upon the bottom or the sides of thevessel, below the surface of the water, and 011e or more upon each sideof the keel.

Arepresents the piston-rod of a steam-cylinder. The inner end of thepiston-rod A is screwed into an arm, B, which passes through a slot inthe bottom or side of the vessel, and its outer end is connected, in themanner hereinafter described, with a block or plate, C, which slides inashort slot in the plate or frame D. To the vouter side of the block orplate O is securely attached a rack-bar, E, which slides upon the outersurface of the plate or frame D, and into its teeth mesh the teeth ofsmall pinion-wheels F rigidly attached to the paddles G. The paddles Gare secure` ly pivoted to the plate or frame D. H are two stops attachedsecurely to the arm B, and which strike alternately against stops Iplaced between them and secured to the plate or frameD to limit themovement of the plate or 'block C upon the plate or frame D. J is ascrew, which is swiveled to two lugs attached` to the block or plate C,kand which passes througha screw-hole in the lower part of the arm B, sothat by turning the screw J the arm B, and with it the stops H, may beadjusted with reference to the stops I, as may be desired, to reversethe paddles G. As the screw J is turned in the arm B the piston-rod Amust also be turned in the said arm to keep the arm in proper position,so as not to inter- `fere with the stroke of the piston. This may bedone by connecting the screw J and piston-rod A with each other byequal-sized and equal-toothed gear-wheels, as shown 1n Fig.

l, so that either of said parts A J may-be turned by turning the other.The piston-rod A or screw J may be turned from the pilothouse by a screwand screw-wheelA or other suitable gearing.v The parts of the deviceWithin the slotted bottom or sides of the vessel should be covered witha water-tight box, K,

las shown in Figs. l and 2.

y In operation, as the piston-rod A moves in the proper Adirection todrivethe vessel fo1 ward the rst ett'ect is to slide the` arm B andblock or plate U upon the frame or plate D until one ot' the stops Hstrikes the stops l'. This moves the rack-bar E and projects the paddlesG to bear against the water. As the stops H strike the stops I the armB, plate or block C, plate or frame D, and paddles G are all carriedalong together, the paddles acting upon the water to Vpropel the/vessel. As the pistou-rod begins its return movement the first effect isto move the arm B and block or plate C upon the 'plate or frame D unt-ilthe other stop, H, strikes the stop I. This moves the rack E and turnsthe paddles G in a horizontal position, so as to pass through the waterwith the least resistance. The arm B, block or plate O, plate or frameD, and paddles G then move on together.

The paddles are reversed by turning' the screw J and piston-rod A tovchange the relative position ofthe armB and stopsH with respect to theblock or plate G and stops I, as hereinbefore described.

By reversing the paddles upon one side while the paddles upon the otherside work in the ordinary manner the vessel may be turned in :L Verysmall space-almost upon hel axis.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The combination of the arm B, block or plate C, plateor frame D, rack-bar E, pinionwheels F, pivoted paddles G, stopsH and I,

and swiveled screw J with each other and with the screw piston-rod A ofa steam-cylinder, substantially as kherein shown and. described, and forthe purposes set forth.

CHARLES P. MAGOWITZKY.

Witnesses AUGUST RICKLEPSEN, FREDERIK BUssE.

